Buffer circuit including comparison of voltage-shifted reference

Details Buffer circuit including comparison of voltage-shifted reference Buffer circuit including comparison of voltage-shifted reference

1990-03-12

1992-02-11

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307451, 307263, 307358, 307359, 307543, 307546, H03K 1716, H03K 1902

Patent

active

050878344

ABSTRACT:
An integrated circuit that is useful as a buffer is disclosed. The integrated circuit has an input voltage shifter circuit for shifting an input voltage and an output voltage shifter circuit for shifting an output voltage. It has a first comparator circuit for comparing the input voltage to the output voltage and a second comparator circuit for comparing the shifted input voltage to the shifted output voltage. The first comparator circuit produces a first control signal and the second comparator circuit produces a second control signal. A voltage driver circuit receives the control signals and produces the output voltage. A capacitor to compensate the output voltage can be connected to the output voltage before it is applied to the first comparator circuit and to the output voltage shifter circuit.

REFERENCES:
patent: 4859871 (1989-08-01), Kobayashi et al.
patent: 4906914 (1990-03-01), Ohsawa
D. J. Allstot, W. C. Black, Jr., "Technological Design Considerations for Monolithic MOS Switched-Capacitor Filtering Systems", Proc. IEEE, vol. 71, No. 8, pp. 967-986.
Y. A. Haque, R. Gregorian, et al., "A Two Chip PCM Voice CODEC with Filters", IEEE, vol. SC-14, No. 6, Dec. 1979, pp. 961-969.
Tat Choi, et al., "High Frequency CMOS Switched Capacitor Filters for Communication Applications", IEEE ISSCC, pp. 246-247, Feb. 1983.

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